FILICES. 699 



I 8. Few veinlets connected in a netviork, most free : leaf and petiole scaly 

 (Lepicystis, J. Sm,), 



295. P. mcanum, Sio. Low: leaf piunatipaitite, coriaceous, glabrescent atove, 

 densely covered with rusty scales beneath : segments distant, oblong-linear, bluntifh, invo- 

 lute, usually subcntire, connected by the narrowly decarrent and upward dilaied base, most 

 equal; sori l-serial.-^-&Ai. Crypt, t. 11. I. — P. vclatum, Schk. Acrostichum polypo- 

 dioides, i.— 4"-l' high ; most segments 6"'-8"' long, li"'-2'" broad, 2"'-6"' distant from 

 each other. — Hab. Jamaica], all coll., ou trees ; S. Vincent 1 ; Trinidad 1, Schlc; [Southern 

 United States ! aod Cuba 1 to Uruguay ! ; Galapagos ! ; tropical Africa]. 



§ 4. All veinlets free, i!' rarely a few anastomosing") (Ctenopteris, Bl.). 

 * Veixlets divided or l-fid, Uiixed with simple ones. 



896. P. dissimile, L. Leaf pinnatisect, membranaceous-chai;taeeous, glabrous : seg- 

 ments distant, lanceolate or lanceolate-linear, acuminate, repand, superior oblitjuely adnate 

 at the upward dilated, lowest subsessile at the euneaie base: veinlets dichotomously 

 branched (sometimes partly anastomosing) ; sori oval, terminating the lower anterior 

 branches of the veinlets. — SchJc. Crypt, t. 14. — P. sororium, iifM. — Yishit of P. neriifo- 

 lium, Schlc— 2'-3' high : longer segments 5"-6" long, 8"'-10'" broad, 8"'-10"' distant 

 from each other at the base. — Hab. Jamaioa (Sw.) ; Dominica I, Imr., S. Vincent 1, 

 Guild, ; [Cuba ! and Mexico ! to Venezuela ! and Peru !]. 

 <~ 297. P. pectinatuBO, L. Leaf pinnatisect, elastical-chaHaceous, pubervlous, much 

 longer than tlie petiole : Mgments regularly alternate, horizontal, linear from a mbequal, 

 suiulaie, adn^aie base, bluntish, usually entire, most contiguous or slightly cohering : vein- 

 lets Schotomously branched or bifid ; sori terminating the anterior branches of the veinlets. 

 — Flum. Fit. t. ?>'i. — P. Schkuhi-ii, Radd. {Schlc. Crypt. 1. 17. b. sinistr.) : a form with the 

 lowest segments not decurrent.— 1'-3'(-5') high ; segments 9"'-18"' long, 2'" broad above 

 the base. 



a. Most segments approximate, separated by an acute sinus. — P. lomariiforme, Kze., 

 Metten. I : a form with subfalcate segments, the lowest distant. 



/3. simile, L. Segments distant, separated hy a rounded sinus, or the base produced at 

 both sides. like a wing.— ;S;. t. 32 : quoted by Linnseus.— P. Otites, W., Metten.! (non Sw.). 



Hab. Jamaica!, Maef, Saner.; Dominica!, Imr.; [Cuba! to Brazil!]. 



298. P. taxifolium, L. leaf pinnatisect, rigid-coriaceous, glabrate from fugacious 

 pilose down beneath, shortly petioled, tapering at both ends : segments regularly alternate, 

 nearly horizontal, lanceolate-linear or linear,, from a subequal, subulate, adnate base,con-^ 

 tiguous, ejitire. revolute at the margin : most veinlets ^-fid, " some dichotomonsly branched," 

 all -free ■ rhachis rusty-pilose ; sori terminating the anterior branches of the veinlets. -- 

 Fium Fil i. 89.— P. Plumula, JF.— 6"-12" high ; middle segments 8"'-12"' long, 2'" 

 broad at the base.— Hab. Jamaica !, Pd. ; [Haiti ! and Mexico ! to Ecuador ! and Brazil !]. 



299 P. curvatum, Sk. Leaf deeply pinnatipartite, elaslical-cliartaOeous, grarmlar- 

 puherulou's beneath, subsessile or shortly petioled': segments regularly alternate, spreading 

 lanceolate-linear from an obliquely subulate, adnate base, bluntish, repand-entire, aU 

 colierinqat the base, lowest much decurrent, deltoid: veinlets partly 2,-fid, partly simple ; 

 sori terminating the anterior branches of the veinlets.— P. Moritzianum, Lie. m PI. Montz ! 

 P. curvatum, J»-««». {PL LecU.), is distinguished by pinnatisect leaves a longer petiole 

 and pilose down.— Ciespitose, about 1' long, ascending; most -segments 1" long, 2' broad 

 above the base.— Hab. Jamaica!, P^., on trees near the mountam-peaks ; [Guadeloupe; 

 Venezuela I to Ecuador !] . 



300 P Otites Sw (non W.). Leaf pinnatisect, elliptical-membranaeeous, pubeni- 

 lous at the" ribs or glabrescent, much longer than the petiole : segments distant spreading, 

 linear from an obliquely adnate, narrowly decm'rent base, sinuate (or serrulate , bluntish: 

 rhachis-^puberulousf vtinlets partly %.fid, paHly simple; ^^ '^r^'f'll^t^X:' 

 tranches of the veinlets.-Pta. Fil. t. 85.-P. teumfolium. A^A. P decipiens /fo«* 

 isZ t a79 S) ■ a form with partly serrate, and P. pilipes, Hook. (lo. t. 221), with 

 2.yi.5L:»?;.-b^'-12''highr.egments 8"^12"' long, 14'" broad.-HAB. Jamaica!, 

 Maqf., Jfiles; [Cuba I and Venezuela! to Peru IJ. ^ ^ 



